http://www.gamesas.com/topic/1603434-the-elder-scrolls-vi-is-a-long-ways-off-interview/
I know there's not much to really further discuss on this topic but I thought I'd like to throw my two cents in.
While I have a love/hate relationship with the most recent news concerning TES VI, I'm actually learning to accept, realize and believe that it is in BGS' best personal interest to once again revolutionize open world RPGs. And yes when I say "once again" I am referring to Morrowind. So I am completely okay with waiting for them to do what they have to do, acquire the technology needed and make their vision that is TES VI, come to life.
When it comes to envisioning what the next game will be like for me personally and the reasoning for BGS waiting for tech to catch up is obviously larger game worlds, perhaps 2x or 3x the size of what they would normally create, large-scale battles, seasonal foliage (They tried this in Skyrims Game Jam but I guess the tech wouldn't support it) and lastly, wishful thinking here, but maybe some way to possibly use our own voice for the protagonist. I could see TES VI being centered around the Aldmeri Dominion taking place in Alinor, Valenwood and Elsweyr. I could go on but I think that's enough for now.
As far as predicting the announcement time...it really is hard to say. Bethesda has always said it will be a while or a long time before they talk about their next game and then just a year later BOOM! Announcement. They did this with both Skyrim and Fallout 4 I believe. And this is the part where the hate comes into play because they've changed as a developer, in a good way mind you. They announced the new BGS back in December to help build games together with the Maryland Studio. But we still don't know what exactly they are working on. Now the man with the plan, Todd Howard, has two other "major" projects (which are games confirmed by Pete Hines on Twitter) so it's really frustrating to get a good estimate of when we'll get TES VI announcement. They're all over the place now but that's a good thing. I'm glad to see them extremely busy and wanting to give us more content. It was so much easier before though when they would just transition back and forth between Fallout and The Elder Scrolls because that's all they would work on. Now they have another studio and two more games in the works. With all of that being said, my estimate would have to be 2020. If it's sooner than that, awesome! If it's later then it's just going to be that much more greater. Okay sorry, I'm done.